Home / 3,423.87-4,724.73-1,931.85

Finding the Fourth Proportional to 3,423.87, 4,724.73 and 1,931.85

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Solution

The fourth proportional to 3,423.87, 4,724.73 and 1,931.85 is: 2,665.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,423.87 : 4,724.73 = 1,931.85 : x
  2. Step 2: Convert to fraction form
    3,423.87/4,724.73 = 1,931.85/x
  3. Step 3: Cross multiply
    3,423.87x = 4,724.73 × 1,931.85
  4. Step 4: Simplify right side
    3,423.87x = 9,127,469.65
  5. Step 5: Solve for x
    x = 9,127,469.65/3,423.87
  6. Step 6: Final answer
    x = 2,665.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.